Night Shift

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Improve a codebase autonomously within a fixed deadline, keeping only safe changes supported by concrete evidence.

A valid run ends with verified improvements or a verified no-op. Never invoke an ask-user mechanism or end a user-facing message with a question. Convert every unresolved decision into a deferred-work entry with its evidence, risk, and required choice while continuing any independent safe work.

Arguments

• path: Optional absolute or relative path. Default to the current Git worktree root. Resolve it canonically and accept it only when it is inside that worktree.
• --max-runtime DURATION: Optional positive integer followed by m or h, such as 45m or 3h. Default to 2h.

Treat an invalid path, duration, unknown option, or ambiguous positional input as a blocker. Report it and stop.